Portsmouth Rhode Island Weather Almanac
Monday, December 30, 2019
Cloudy, Moderate/Heavy Rain and Fog, Windy and Warm
Climate Normal Period						Climate Record Period
1981- 2010						1893 - 2019
		December 30, 2019								Record					Record
Observed Daily Data		Observed		2018		Normal		Depart		Highest					Lowest
Maximum Temperature		38		37		39		-1		60		in	1984		5		in	1917
Minimum Temperature		36		28		24		+12		48		in	1948		-10		in	1917
Average Temperature		37		33		32		+5		52		in	1948		-3		in	1917
Precipitation		1.98		.00		.13		+1.85		1.98		in	2019
One Hour		.32		.00						.39		in	2000
Snow		0.0		0.0		0.1		-.13		5.8		in	1993
Snow Depth		0		0						15		in	1947
HDD		28		32		33		-5		68		in	1917		13		in	1948
CDD		0		0		0		+0		0		in
Maximum Dew Point		37		26		30		+7		53		in	1984		-3		in	1987
Minimum Dew Point		34		21		14		+20		42		in	1990		-16		in	1962
Average  Dew Point		36		24		22		+14		47		in	1990		-7		in	1987
Maximum Humidity		96%		87%		85%		+11%		100%		in	2005		38%		in	1949
Minimum Humidity		89%		57%		53%		+36%		96%		in	1992		16%		in	1994
Average Humidity		93%		72%		69%		+24%		98%		in	1992		30%		in	1994
Maximum Barometer		30.07		30.30		30.15		-00.08		30.68		in	2006		29.33		in	1997
Minimum Barometer		29.75		30.13		29.81		-00.06		30.40		in	1972		28.89		in	1997
Average Barometer		29.91		30.22		29.98		-00.07		30.50		in	1978		29.11		in	1997
Average Wind		12.0		4.1		8.6		+3.4		25.7		in	1962		2.2		in	2004
Direction		ENE		W		NW				NW					N
High Wind Gust		31		18		26		+5		70		in	1962		11		in	2004
Direction		E		NNW		NW				NW					NNW
Wind Chill		27		23		15		+12							-30		in	1962
Maximum Water Temp		39.9		42.1		43.1		-3.2		48.9		in	2006		37.8		in	2017
Minimum Water Temp		37.8		40.5		40.5		-2.7		46.3		in	2015		33.6		in	2017
Average Water Temp		38.9		41.3		41.8		-3.0		47.0		in	2015		35.7		in	2017
Sunrise/ AM Twilight		7:11:25 AM						6:40:15 AM
Sunset / PM Twilight		4:24:55 PM						4:56:06 PM
Length Of Day		9:13:30
Special Conditions		Fog
Comments
		December 30, 2019								Record					Record
Month-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Avg Maximum Temperature		42.4		43.1		42.2		+0.2		54.1		in	2015		30.3		in	1989
Avg Minimum Temperature		29.2		30.3		28.3		+1.0		41.5		in	2015		14.3		in	1989
Average Temperature		35.8		36.7		35.2		+0.6		47.8		in	2015		22.3		in	1989
Total Precipitation		7.40		3.85		4.22		+3.18		9.45		in	1936		.58		in	1955
Total Snow		8.4		0.2		7.3		+1.1		22.3		in	1904		T		in	2011
Total HDD		865		841		886		-21		1276		in	1989		507		in	2015
Total CDD		0		0		0		+0		0		in			0		in
Avg Maximum Dew Point		35.8		35.7		34.1		+1.7		49.4		in	2015		15.6		in	1989
Avg Minimum Dew Point		21.9		20.9		18.5		+3.4		36.1		in	2015		-0.7		in	1989
Average  Dew Point		28.9		28.3		26.3		+2.5		42.7		in	2015		7.4		in	1989
		December 30, 2019								Record					Record
Year-to-Date Summary		Observed		2018		Normal		Depart		Highest					Lowest
Total Precipitation		56.90		53.08		48.07		+8.83		65.49		in	1983		27.66		in	1965
Total Snow (since Jul 1 19)		8.4		4.4		8.4		+0.0		23.7		in	1904		T		in	1999
Total HDD (since Jul 1 19)		1855		1901		1918		-63		2448		in	1904		1302		in	2015
Total CDD (since Jan 1)		731		775		563		+168		807		in	2016		290		in	1902
Hour-by-Hour Weather For December 30, 2019
Climate Weather for December 30
Weather History For December 30
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